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dc.contributor.authorGholami, Raoof
dc.contributor.authorRasouli, V.
dc.date.accessioned2017-01-30T13:59:27Z
dc.date.available2017-01-30T13:59:27Z
dc.date.created2015-12-10T04:26:00Z
dc.date.issued2012
dc.identifier.citationGholami, R. and Rasouli, V. 2012. Numerical simulations of casing collapse: A case study in the South of Iran, pp. 151-162.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/37070
dc.identifier.doi10.2495/PMR120141
dc.description.abstract

Collapse of casings during production has been reported on many occasions in different fields. Regardless of the root for the failure of the casings, this is due to stresses applied to the casing exceeding its ultimate strength. Failure of the casing similar to any pipe could be due to compressional, tensional, and burst or collapse forces due to various loads being applied to the casing string. Although several analytical models have been developed based on elastic or plastic approaches to estimate the ultimate strength of casing, it has been shown that these methods underestimate the casing strength. Casings' mechanical and geometrical parameters, effective in-situ stresses, temperature, formation properties and other intervening are simultaneously required for a complete design of casing. To simulate the failure of casing in the presence of various forces, numerical modeling is a robust approach that can be employed. In this study, finite element simulation was used through the use of ABAQUS software to model the failure of casings in one of the wells located in the southern part of Iran. The results revealed that increasing the diameter to thickness (D/t) ratio decreases the ultimate strength of casing, leading to unexpected failure in the wells under consideration. It was also shown that eccentricity drastically reduces the strength of casing. Since the numerical results of current study were in an acceptable agreement with experimental studies, numerical simulation method proposed here can be used to predict the casing collapse. © 2012 WIT Press.

dc.titleNumerical simulations of casing collapse: A case study in the South of Iran
dc.typeConference Paper
dcterms.source.volume80
dcterms.source.startPage151
dcterms.source.endPage162
dcterms.source.issn1746-4471
dcterms.source.titleWIT Transactions on Engineering Sciences
dcterms.source.seriesWIT Transactions on Engineering Sciences
curtin.departmentCurtin Sarawak
curtin.accessStatusOpen access via publisher


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